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1 // Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of the License "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // e32test\mmu\t_btb.cpp |
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15 // |
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16 // |
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17 |
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18 //! @SYMTestCaseID KBASE/T_BTB |
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19 //! @SYMTestType UT |
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20 //! @SYMTestCaseDesc Make sure processes can't interfere with each other via the BTB. Make sure the BTB is turned on. |
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21 //! @SYMREQ REQ4095 |
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22 //! @SYMTestActions Make concurent processes with code areas and thrash them. |
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23 //! @SYMTestExpectedResults They shouldn't interfere. The BTB should be enabled. |
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24 //! @SYMTestPriority Low |
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25 //! @SYMTestStatus Defined |
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26 |
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27 #include <e32test.h> |
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28 #include "u32std.h" |
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29 |
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30 #ifdef __CPU_ARM |
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31 |
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32 extern TInt BranchTest1(); |
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33 extern TInt BranchTest2(); |
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34 extern TInt BranchTest3(); |
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35 void BranchTest4(TInt); |
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36 extern void BranchTest1End(); |
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37 extern void BranchTest2End(); |
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38 extern void BranchTest3End(); |
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39 extern void BranchTest4End(); |
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40 |
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41 typedef TInt (*PFI)(void); |
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42 typedef void (*PFV)(TInt); |
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43 |
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44 void SecondaryProcess(const TDesC& aCmd, RTest& test) |
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45 { |
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46 test.Start(_L("Secondary Process")); |
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47 TLex lex(aCmd); |
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48 TUint32 addr; |
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49 TInt r=lex.Val(addr,EHex); |
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50 test(r==KErrNone); |
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51 test.Printf(_L("Primary process says: RAM code at %08x\n"),addr); |
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52 TInt pageSize; |
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53 r=UserHal::PageSizeInBytes(pageSize); |
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54 test(r==KErrNone); |
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55 RChunk c; |
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56 r=c.CreateLocalCode(pageSize,0x100000); |
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57 test(r==KErrNone); |
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58 PFI pBranchTest2=(PFI)c.Base(); |
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59 test.Printf(_L("Secondary test loop function at %08x\n"),pBranchTest2); |
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60 |
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61 test((TUint32)pBranchTest2==addr); |
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62 |
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63 TInt fnLength = (TInt)&BranchTest2End-(TInt)&BranchTest2; |
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64 |
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65 test.Printf(_L("SecProc: Copying %d bytes from %08x...\n"), (TInt)&BranchTest2End-(TInt)&BranchTest2, (TAny*)&BranchTest2 ); |
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66 Mem::Copy((TAny*)pBranchTest2, (TAny*)&BranchTest2, fnLength); |
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67 User::IMB_Range((TAny*)pBranchTest2, fnLength+(TUint8*)pBranchTest2); |
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68 |
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69 TTime begin; |
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70 begin.HomeTime(); |
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71 |
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72 test.Printf(_L("Running secondary loop...\n")); |
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73 |
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74 TInt n=0; |
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75 FOREVER |
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76 { |
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77 n=pBranchTest2(); |
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78 |
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79 if (n) |
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80 break; |
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81 |
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82 TTime now; |
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83 now.HomeTime(); |
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84 if (now.MicroSecondsFrom(begin).Int64()>20000000) // ten seconds for each test ought to be long enough |
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85 break; |
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86 } |
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87 test.Printf(_L("Ending secondary loop.\n")); |
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88 test(n==0); |
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89 //test.End(); |
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90 } |
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91 |
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92 |
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93 GLREF_C TInt E32Main() |
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94 { |
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95 RTest test(_L("T_BTB")); |
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96 test.Title(); |
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97 |
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98 TBuf<16> cmd; |
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99 User::CommandLine(cmd); |
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100 if (cmd.Length()!=0) // if we get a command line, we're the secondary process |
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101 { |
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102 SecondaryProcess(cmd,test); |
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103 return 0; |
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104 } |
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105 |
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106 test.Start(_L("Create primary process code chunk")); |
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107 TInt pageSize; |
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108 TInt r=UserHal::PageSizeInBytes(pageSize); |
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109 test(r==KErrNone); |
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110 |
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111 RChunk c; |
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112 r=c.CreateLocalCode(pageSize,0x100000); |
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113 test(r==KErrNone); |
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114 TUint8* pCode=c.Base(); |
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115 test.Printf(_L("Primary process code chunk at %08x\n"),pCode); |
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116 |
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117 // Spawn a secondary process |
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118 RProcess p; |
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119 TRequestStatus s; |
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120 TBuf<16> codeBaseHex; |
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121 codeBaseHex.Format(_L("%08x"),pCode); |
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122 r=p.Create(RProcess().FileName(),codeBaseHex); |
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123 test(r==KErrNone); |
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124 p.Logon(s); |
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125 p.Resume(); |
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126 |
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127 |
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128 TTime begin, now; |
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129 TInt n=0, m=0, q=0, fnLength; |
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130 |
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131 PFI pBranchTest1=(PFI)pCode; |
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132 test.Printf(_L("Primary test loop function at %08x\n"),pBranchTest1); |
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133 |
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134 fnLength = (TInt)&BranchTest1End-(TInt)&BranchTest1; |
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135 |
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136 //test.Printf(_L("PriProc: Copying %d bytes from 0x%08x to 0x%08x for forward-branching test...\n"), fnLength, &BranchTest1, pBranchTest1); |
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137 Mem::Copy((TAny *)pBranchTest1, (const TAny*)&BranchTest1, fnLength); // copy in the asm test code |
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138 User::IMB_Range((TAny*)pBranchTest1, fnLength+(TUint8*)pBranchTest1); |
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139 |
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140 test.Printf(_L("Running primary loop...\n")); |
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141 begin.HomeTime(); |
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142 FOREVER |
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143 { |
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144 m++; |
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145 n=pBranchTest1(); |
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146 if (n) |
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147 break; |
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148 now.HomeTime(); |
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149 if (now.MicroSecondsFrom(begin).Int64()>10000000) // ten seconds ought to be long enough |
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150 break; |
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151 } |
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152 test(n==0); |
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153 test.Printf(_L("Ending primary loop. Ran %d times in 10s.\n"), m); |
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154 |
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155 // run the second test |
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156 |
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157 PFI pBranchTest3=(PFI)pCode; |
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158 |
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159 fnLength = (TInt)&BranchTest3End-(TInt)&BranchTest3; |
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160 //test.Printf(_L("PriProc: Copying %d bytes from 0x%08x to 0x%08x for back-branching test...\n"), fnLength, &BranchTest3, pBranchTest3); |
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161 Mem::Copy((TAny *)pBranchTest3, (const TAny*)&BranchTest3, fnLength); // copy in the asm test code |
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162 User::IMB_Range((TAny*)pBranchTest3, fnLength+(TUint8*)pBranchTest3); |
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163 |
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164 test.Printf(_L("PriProc: Starting back-branch test loop.\n")); |
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165 m=0; |
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166 begin.HomeTime(); |
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167 FOREVER |
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168 { |
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169 m++; |
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170 n=pBranchTest3(); |
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171 if (n) |
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172 break; |
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173 now.HomeTime(); |
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174 if (now.MicroSecondsFrom(begin).Int64()>10000000) // ten seconds ought to be long enough |
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175 break; |
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176 } |
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177 test(n==0); |
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178 test.Printf(_L("Ending primary back-branching loop. Ran %d times in 10s.\n"), m); |
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179 |
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180 p.Kill(0); |
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181 User::WaitForRequest(s); |
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182 TInt exitType=p.ExitType(); |
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183 TInt exitReason=p.ExitReason(); |
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184 TExitCategoryName exitCat=p.ExitCategory(); |
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185 CLOSE_AND_WAIT(p); |
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186 test.Printf(_L("SecProc: %d,%d,%S\n"),exitType,exitReason,&exitCat); |
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187 test(exitType==EExitKill); |
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188 test(exitReason==KErrNone); |
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189 |
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190 // speed test |
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191 |
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192 PFV pBranchTest4 = (PFV)pCode; |
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193 fnLength = (TInt)&BranchTest4End-(TInt)&BranchTest4; |
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194 //test.Printf(_L("PriProc: Copying %d bytes from 0x%08x to 0x%08x for forward-branching speed test...\n"), fnLength, &BranchTest4, pBranchTest1); |
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195 Mem::Copy((TAny *)pBranchTest4, (const TAny*)&BranchTest4, fnLength); // copy in the asm test code |
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196 User::IMB_Range((TAny*)pBranchTest4, fnLength+(TUint8*)pBranchTest4); |
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197 |
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198 test.Printf(_L("Speed test running with f(0)...\n")); |
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199 m=0; |
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200 begin.HomeTime(); |
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201 FOREVER |
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202 { |
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203 m++; |
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204 pBranchTest4(0); |
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205 now.HomeTime(); |
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206 if (now.MicroSecondsFrom(begin).Int64()>10000000) // ten seconds ought to be long enough |
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207 break; |
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208 } |
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209 test.Printf(_L("Ending f(0) test. Ran %d times in 10s.\n"), m); |
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210 |
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211 test.Printf(_L("PriProc: Starting f(1) run.\n")); |
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212 q=0; |
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213 begin.HomeTime(); |
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214 FOREVER |
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215 { |
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216 q++; |
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217 pBranchTest4(1); |
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218 now.HomeTime(); |
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219 if (now.MicroSecondsFrom(begin).Int64()>10000000) // ten seconds ought to be long enough |
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220 break; |
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221 } |
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222 test.Printf(_L("Ending test loop with f(1). Ran %d times in 10s.\n"), q); |
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223 |
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224 test(m-q>m/4); // the difference between m and q should be large, indicating successful prediction |
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225 |
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226 c.Close(); |
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227 |
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228 test.End(); |
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229 return 0; |
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230 } |
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231 #else |
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232 GLREF_C TInt E32Main() |
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233 { |
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234 return 0; |
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235 } |
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236 #endif |